Chain conveyer



Jan. 16,1923.

c. G. PFEIF'FER.

lCHAIN CONVEYER.

man MAY 22, 1922.

Patented Jan. 16, 1923.

UNITED STATES PATENT oFEicE.

CHARLES G. PFEIFFER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TOSPECIALTY ENGINEERING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, ACORPORATION OF PENNSYLVANIA.

,f f a/Z whom. t 'may fonce/"n VBe it known that I. CHARr.Es (r.PFETLFER,

a citizen of the United States, residing at VPhiladelphia, county ofPhiladelphia, and

this type in which each link is formed withv a flangeV so thatthe'flanges along both sides of the loaded stretch o the conveyer maycooperate to form a trough-like structure, the flanges constituting sidewalls to prevent dislodgment of material` from the belt.

In addition vto the foregoing this invention comprehendsimprovements inthe details of construction and arrangement of the correlated par-ts tobe hereinafter set forth and particularly pointed out 1n the appendedclaims.

In the accompanying drawings, Fig. I 1s a viewv in topf-plan of'severalA links forming part of a chain conveyerand illustrating theembodiment therein of my invention.

Fig. II is a View in Side elevation of the links shown in the'precedingfigure.

Fig. III is a view in transverse section of aconveyer structurecomprising a pair of chains and an intermediate belt supportedtherebetween. l

Fig. IV is a view in top plan of several links showing an alternativeconstruction.

Fig. V is a view in side elevation of the links shown in the immediatepreceding figure; and

Fig. VI is a View in transverse section of a conveyer embodying themodified-links.

With reference to Figs. I, II and III of the drawings, 10 indicates asan entirety my improved link, the specific structure of which includes apair of side bars 11 and 12 connected at one end by means of an in-.,tegral sleeve 13. The side bars converge CHAIN CONVEYER.

Application l'ed May 22,'

1,922. serial No. 562,603.

toward the sleeve thus reducing the length of the latter with respect tothe distance between the opposite or free lends of the side vbars sothat theside bars may overlap or enclose the'ends of the sleeve of an'adjoining link to form the chain. the connection being establishedthrough the medium of a pin 14 suitably retained against dislodgment,and which passes through the sleeve and penetrates .the appropriatelyapertured ends of the Side bars. is formed on the side face of t-he bar11 of each link and a flange 16 is formed on the top face of each bar 12so that the flange is located in a plane at right angles to the face ofthe conveyer and parallel to the direction of movement.` l'Ihe flange'`follows the curvature ofthe bar 12 so that in a series of links the endsof each fiange are lapped by the ends of adjoining flanges to form awall indicatedl generally lat 17 `in Figs. IIand III, the latter showingthe assembly of a pair of 'chains anda belt conveyer. In the use of thisform of linkthe connection between the edges of the belt,

designated 18 is performed through the mev dium of longitudinal stripsor Iblocks y19 secured to the under side of the belt along eaclv edgeand designed to be engaged by the lugs 15 of the links thus disposingthe latter beneath the belt and almost wholly within the side edgesthereof. 'The securing meanssuch as a rivet mayv penetrate both the lugand member 19 in order to fasten the same to the belt. This arrangementpermits of the use of a comparatively wide belt in instances where thedistance betvveen'the chains must remain fixed by reason ofthe immovablemounting of the sprocket wheels over which the chains pass. The flanges15, it will be noted rise perpendicularly above the surface of the beltforming the walls 17 which enclose the edges of the belt and define atrough-like structure as shown in Fig. III.

The presence of the flanges does not inter- A lug 15' wheels or alongthe stretches. The materia-l carried by the belt 18 is effectivelyretained thereon by reason of the enclosing side WallS In instancesnecessitating the vuse of a narrower belt, the chain spacing ,remainingfixed. recourse is had to the form of link [the inner or adjacent sidesof the chains so as to enclose the edges of a belt 2l which 1s narrowerthan the first mentioned belt 18 by an amount equal approximately totwice the distance between the side bars l1 and 12 of a link. Theassembly is shown in Fig. VI

' from which it will be noted that the belt,

in this instance may be secured directly to the face of each lug l5. Thelinks are located entirely beyond the edges of the b elt asdistinguished over the first arrangement described. It Will be apparentthat the troughing flanges may be embodied in any other forni of linkthan that described above and hence I do not limit myself to the exactconstruction of the link but reserve the right to construct thecombination of the trough* ing flange With any type of link adapted tocooperate with the flange'in performing the contemplated result.

Having thus described my invention, I claim: y v

l. A conveyer comprising acontinuous flexible supporting element, and anarticulated means traveling and cooperating therewith to fornicontinuous retaining Walls preventing dislodgment of material from thesupporting element. l

2. A conveyer comprising a continuous flexible supporting element, andmeans com- 'prising a series of rigid elements in articulated relationcooperating with each other to form a continuous retaining Wall adaptedto prevent dislodgment of material from the supporting element.

3.' A conveyer comprising .a continuous flexible supporting element, anarticulated guiding element movable therewith, and means forming part ofthe latter to define a continuous retaining Wall preventing disa guidefor the edge of the supporting element, and a series of flanges, oneformed with each link cooperating to define a continuous retaining Wallpreventing dislodgment of material. from the supporting element. y v

6. A conveyer comprising a belt, a pair of chains one for each edge ofthe belt, means on each link affording connection thereof with the belt,and a flange on each link, said 'flanges cooperating to form retainingWalls along the edges of the belt.

7. A chain link for conveyers comprising, side bars, a cross connectingmember, a flange formed on one of said bars to provide a retaining Wall,and a lug formed on'onc -of said bars for attachment to a conveyer.

8. A chain link for conveyers comprising,

a pair of side bars in converging relation, a sleeve connecting theiradjacent ends, a lug formed .with oneof said bars for attachment to theedge of a conveyer, and an upstanding flange formed. with one of saidbars to provide a retaining wall.

9. A conveyer comprising a flexible belt,

- a chain secured to each edge of the belt, comprising links, and arectangular flange formed 1 With each link of the chain, said flangescooperating to form retaining Walls the upper edges of which arestraight.

In testimony whereof, I. have hereunto signed my name atv'Phila'delphia,Pennsylvania, this 16th Vday of May, 1922.

CHARLES G. PFEIFFER.

Witnesses:

JAMES H. BELL, E. L. FULLERTON.

